Mailinglist Archive: opensuse-security (605 mails)

[Boris Lorenz <bolo@xxxxxxx>]

Hi,

On 12-Oct-01 Avi Schwartz wrote:
> Looks like the receiver is blacklisted by few DNSbl filters due to being a 
> spam source.  You can check for yourself at:
> 
> http://relays2.osirusoft.com/cgi-bin/rbcheck.cgi

I think the *sender* is blacklisted, not the receiver. I have never seen an
anti-spam feature of any MTA which checks wether the host the MTA runs on is
blacklisted - would be a poke in the eye sometimes ;))

The postmaster warning mail reads:

"while talking to mail-in.pol.net.uk.:(email i'm mailing to) [...]"

...and prints just this communication afterwards.

Maybe the sending mailer is blacklisted after being abused by some formmail
spammers... ...or it accidentally got on some blacklist, this happens
sometimes (although the rate of these false alarms gets lower since ORBS is
outta business...).

Btw., SamSpade ( http://classic.samspade.org ) also offers a good blacklist
check.

> Avi
> 
> --On Friday, October 12, 2001 09:43:07 AM +0100 elfed lewis 
> <e.lewis@xxxxxxxxxxxxxxxxxxxx> wrote:
> 
>> I got this message today (names have been changed to protect the
>> innocent!).   Is it saying i'm blacklisted, or the host i'm emailing to
>> is blacklisted?
>>
>> ----------email-------------------
>>
>> from localhost
>>
>> _ _----- The following addresses had permanent fatal errors -----
>> (email i'm mailing to)
>> _ _ (expanded from: (their local alias name))
>>
>> _ _----- Transcript of session follows -----
>> ... while talking to mail-in.pol.net.uk.:(email i'm mailing to)
>>>>> _RCPT To:
>>
>> <<<_550-
>> <<<_550 mail from (my emailer ip address) rejected: administrative
>> prohibition (host is blacklisted)
>> 550 (email i'm mailing to)... User unknown
>>
>> ----------email-------------------
[...]

Boris Lorenz <bolo@xxxxxxx>
---